论文标题
有限二维超导体中的磁反应理论
Theory of magnetic response in finite two-dimensional superconductors
论文作者
论文摘要
我们提出了具有Rashba旋转轨耦合的有限大小的二维超导体中的磁反应理论。后者和平面齐曼场之间的相互作用一方面导致面前自旋极化，该偏振在超导相干性的长度上积聚在样品边缘，另一方面，循环超电流循环超电流，从而从宏观的尺度上脱离边缘。在宽度W的长长有限条纹中，自旋极化和电流都导致条纹末端引起的总磁矩。这两个贡献分别使用W和W2量表，因此，对于足够大的样品，可以通过当前的磁力测定技术检测到。
We present a theory of magnetic response in a finite-size two-dimensional superconductors with Rashba spin-orbit coupling. The interplay between the latter and an in-plane Zeeman field leads on the one hand to an out-of-plane spin polarization which accumulates at the edges of the sample over the superconducting coherence length, and on the other hand, to circulating supercurrents decaying away from the edge over a macroscopic scale. In a long finite stripe of width W both, the spin polarization and the currents, contribute to the total magnetic moment induced at the stripe ends. These two contributions scale with W and W2 respectively, such that for sufficiently large samples it can be detected by current magnetometry techniques.
